Myrmica is a genus of ants within the subfamily Myrmicinae. It is widespread throughout the temperate regions of the Holarctic and high mountains in Southeast Asia. The genus consists of around 200 known species and additional subspecies, although this figure is likely to rise as soon as the Chinese and Nearctic fauna lists are revised. Inquilines The genus contains a number of inquiline species (commensal symbionts), other Myrmica species that manage to invade the nest of their host. Subsequently, they use hormones to manipulate the host colony in such a way that eggs of the host queen develop into workers, and parasite brood into sexuals. Hence, the parasite is not able to sustain a colony of its own, but uses host resources instead. Similarly, larvae of the butterfly genus Maculinea (a junior synonym of Phengaris, family Lycaenidae) and of the southern armyworm, live inside Myrmica nests where they are either directly fed by ants or prey upon ant brood. This parasitism is employed primarily by specific species such as Phengaris arion forming predatory relationships. Species M. ademonia Bolton M. afghanica Radchenko and Elmes M. aimonissabaudiae Menozzi M. alaskensis Wheeler M. aldrichi M. aloba Forel M. americana Weber M. anatolica Elmes Radchenko and Aktac M. angulata Radchenko, A.G., Zhou. S., and Elmes, G.W. M. angulinodis Ruzsky M. arisana Wheeler M. arnoldii Dlussky M. atomaria Gerstaecker M. basalis Smith M. bergi Ruzsky M. bessarabica Nasonov M. bidens Förster M. bibikoffi Kutter M. boltoni Radchenko and Elmes M. brancuccii Radchenko and Elmes M. breviceps Smith, F. M. brevinodis Emery M. brevispinosa Wheeler M. cachmiriensis Forel M. cadusa Kim Park and Kim M. cagnianti Espadaler M. cariniceps Guérin-Méneville M. caucasicola Arnol’di, M. chinensis Viehmeyer M. colax Cole M. collingwoodi Radchenko and Elmes M. commarginata Ruzsky M. contigue Smith M. cursor Smith, F. M. curvithorax Bondroit M. diluta Nylander M. dimidiata Say M. discontinua Weber M. displicentia Bolton M. divergens Karavaiev M. domestica Shuckard M. draco Radchenko, G.G., Zhou.S., Elmes, G.W. M. dshungarica Ruzsky M. eidmanni Menozzi M. elmesi Bharti and Sharma M. emeryana Cole M. ereptrix Bolton M. excelsa Kupyanskaya M. exigua Buckley M. faniensis Boven, 1970 M. ferganensis Finzi M. forcipata Karavaiev M. foreliana Radchenko and Elmes M. formosae Wheeler, W.M. M. fortior Forel M. fracticornis Forel M. fragilis Smith M. fuscula Nylander M. galbula Losana M. gallienii Bondroit M. gigantea Collingwood M. glaber Smith M. glacialis Emery M. glyciphila Smith M. gracillima